./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label37.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a60dbc2f79c578f373d1608befa1a0be5fe97eed98271e53ccf8c768ad5b972e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:27:51,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:27:51,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:27:51,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:27:51,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:27:51,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:27:51,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:27:51,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:27:51,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:27:51,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:27:51,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:27:51,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:27:51,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:27:51,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:27:51,456 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:27:51,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:27:51,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:27:51,458 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:27:51,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:27:51,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:27:51,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:27:51,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:27:51,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:27:51,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:27:51,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:27:51,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:27:51,460 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a60dbc2f79c578f373d1608befa1a0be5fe97eed98271e53ccf8c768ad5b972e [2024-12-02 12:27:51,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:27:51,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:27:51,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:27:51,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:27:51,699 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:27:51,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2024-12-02 12:27:54,296 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/data/1ff6d9898/0fbb4fb3484a47a988a4886acc0a3d95/FLAGe4c8f12dd [2024-12-02 12:27:54,656 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:27:54,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/sv-benchmarks/c/eca-rers2012/Problem13_label37.c [2024-12-02 12:27:54,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/data/1ff6d9898/0fbb4fb3484a47a988a4886acc0a3d95/FLAGe4c8f12dd [2024-12-02 12:27:54,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/data/1ff6d9898/0fbb4fb3484a47a988a4886acc0a3d95 [2024-12-02 12:27:54,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:27:54,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:27:54,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:27:54,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:27:54,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:27:54,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:27:54" (1/1) ... [2024-12-02 12:27:54,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed7ae5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:54, skipping insertion in model container [2024-12-02 12:27:54,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:27:54" (1/1) ... [2024-12-02 12:27:54,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:27:55,185 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2024-12-02 12:27:55,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:27:55,897 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:27:55,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/sv-benchmarks/c/eca-rers2012/Problem13_label37.c[7700,7713] [2024-12-02 12:27:56,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:27:56,333 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:27:56,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56 WrapperNode [2024-12-02 12:27:56,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:27:56,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:27:56,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:27:56,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:27:56,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:56,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:56,691 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-12-02 12:27:56,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:27:56,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:27:56,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:27:56,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:27:56,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:56,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:56,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,062 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 12:27:57,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,295 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:27:57,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:27:57,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:27:57,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:27:57,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (1/1) ... [2024-12-02 12:27:57,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:27:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:27:57,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:27:57,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:27:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:27:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:27:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:27:57,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:27:57,616 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:27:57,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:28:03,330 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-12-02 12:28:03,331 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:28:03,366 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:28:03,367 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:28:03,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:28:03 BoogieIcfgContainer [2024-12-02 12:28:03,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:28:03,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:28:03,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:28:03,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:28:03,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:27:54" (1/3) ... [2024-12-02 12:28:03,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2123a98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:28:03, skipping insertion in model container [2024-12-02 12:28:03,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:27:56" (2/3) ... [2024-12-02 12:28:03,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2123a98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:28:03, skipping insertion in model container [2024-12-02 12:28:03,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:28:03" (3/3) ... [2024-12-02 12:28:03,378 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label37.c [2024-12-02 12:28:03,395 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:28:03,397 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label37.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:28:03,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:28:03,496 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d9bbab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:28:03,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:28:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 12:28:03,511 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:03,511 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:03,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:03,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2024-12-02 12:28:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599166315] [2024-12-02 12:28:03,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:03,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599166315] [2024-12-02 12:28:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599166315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:03,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:03,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324106750] [2024-12-02 12:28:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:03,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:03,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:03,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:03,874 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:08,217 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2024-12-02 12:28:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:08,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-12-02 12:28:08,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:08,235 INFO L225 Difference]: With dead ends: 3121 [2024-12-02 12:28:08,235 INFO L226 Difference]: Without dead ends: 1944 [2024-12-02 12:28:08,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:08,241 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 935 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:08,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 12:28:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-12-02 12:28:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2024-12-02 12:28:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2024-12-02 12:28:08,346 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 54 [2024-12-02 12:28:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:08,347 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2024-12-02 12:28:08,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2024-12-02 12:28:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 12:28:08,351 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:08,351 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:08,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:28:08,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:08,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash 916312146, now seen corresponding path program 1 times [2024-12-02 12:28:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507189344] [2024-12-02 12:28:08,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507189344] [2024-12-02 12:28:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507189344] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933007646] [2024-12-02 12:28:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:08,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:08,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:08,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:08,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:08,630 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:12,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:12,131 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2024-12-02 12:28:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:12,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-12-02 12:28:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:12,144 INFO L225 Difference]: With dead ends: 5351 [2024-12-02 12:28:12,144 INFO L226 Difference]: Without dead ends: 3480 [2024-12-02 12:28:12,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:12,147 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:12,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:28:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-12-02 12:28:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2024-12-02 12:28:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2024-12-02 12:28:12,222 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 119 [2024-12-02 12:28:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:12,222 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2024-12-02 12:28:12,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2024-12-02 12:28:12,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 12:28:12,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:12,225 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:12,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:28:12,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:12,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -717638515, now seen corresponding path program 1 times [2024-12-02 12:28:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760888022] [2024-12-02 12:28:12,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760888022] [2024-12-02 12:28:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760888022] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:12,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:12,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:12,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959107295] [2024-12-02 12:28:12,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:12,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:12,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:12,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:12,362 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:15,469 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2024-12-02 12:28:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:15,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-12-02 12:28:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:15,493 INFO L225 Difference]: With dead ends: 10142 [2024-12-02 12:28:15,493 INFO L226 Difference]: Without dead ends: 6665 [2024-12-02 12:28:15,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:15,499 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:15,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:28:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-12-02 12:28:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2024-12-02 12:28:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2024-12-02 12:28:15,634 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 121 [2024-12-02 12:28:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:15,635 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2024-12-02 12:28:15,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2024-12-02 12:28:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 12:28:15,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:15,637 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:15,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:28:15,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:15,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash -523925634, now seen corresponding path program 1 times [2024-12-02 12:28:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609572287] [2024-12-02 12:28:15,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609572287] [2024-12-02 12:28:15,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609572287] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:15,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:15,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262253474] [2024-12-02 12:28:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:15,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:15,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:15,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:15,835 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:18,894 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2024-12-02 12:28:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:18,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-12-02 12:28:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:18,918 INFO L225 Difference]: With dead ends: 19637 [2024-12-02 12:28:18,918 INFO L226 Difference]: Without dead ends: 12982 [2024-12-02 12:28:18,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:18,925 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:18,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 12:28:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-12-02 12:28:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2024-12-02 12:28:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2024-12-02 12:28:19,055 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 127 [2024-12-02 12:28:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:19,055 INFO L471 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2024-12-02 12:28:19,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2024-12-02 12:28:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 12:28:19,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:19,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:19,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:28:19,057 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1324072554, now seen corresponding path program 1 times [2024-12-02 12:28:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802896996] [2024-12-02 12:28:19,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:19,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:19,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802896996] [2024-12-02 12:28:19,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802896996] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:19,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:19,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:19,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789683449] [2024-12-02 12:28:19,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:19,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:19,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:19,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:19,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:19,280 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:22,167 INFO L93 Difference]: Finished difference Result 25135 states and 31306 transitions. [2024-12-02 12:28:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-12-02 12:28:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:22,197 INFO L225 Difference]: With dead ends: 25135 [2024-12-02 12:28:22,198 INFO L226 Difference]: Without dead ends: 12962 [2024-12-02 12:28:22,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:22,205 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:22,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 12:28:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2024-12-02 12:28:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2024-12-02 12:28:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2379446030398888) internal successors, (16045), 12961 states have internal predecessors, (16045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16045 transitions. [2024-12-02 12:28:22,337 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16045 transitions. Word has length 143 [2024-12-02 12:28:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:22,337 INFO L471 AbstractCegarLoop]: Abstraction has 12962 states and 16045 transitions. [2024-12-02 12:28:22,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16045 transitions. [2024-12-02 12:28:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 12:28:22,338 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:22,338 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:22,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:28:22,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:22,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1155556459, now seen corresponding path program 1 times [2024-12-02 12:28:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:22,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235535822] [2024-12-02 12:28:22,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:22,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:22,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235535822] [2024-12-02 12:28:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235535822] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:28:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940054409] [2024-12-02 12:28:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:22,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:22,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:22,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:22,441 INFO L87 Difference]: Start difference. First operand 12962 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:25,871 INFO L93 Difference]: Finished difference Result 31448 states and 39970 transitions. [2024-12-02 12:28:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:25,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2024-12-02 12:28:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:25,898 INFO L225 Difference]: With dead ends: 31448 [2024-12-02 12:28:25,898 INFO L226 Difference]: Without dead ends: 19275 [2024-12-02 12:28:25,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:25,908 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 909 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:25,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 957 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 12:28:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19275 states. [2024-12-02 12:28:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19275 to 18478. [2024-12-02 12:28:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18478 states, 18477 states have (on average 1.2248200465443524) internal successors, (22631), 18477 states have internal predecessors, (22631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18478 states to 18478 states and 22631 transitions. [2024-12-02 12:28:26,110 INFO L78 Accepts]: Start accepts. Automaton has 18478 states and 22631 transitions. Word has length 150 [2024-12-02 12:28:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:26,110 INFO L471 AbstractCegarLoop]: Abstraction has 18478 states and 22631 transitions. [2024-12-02 12:28:26,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand 18478 states and 22631 transitions. [2024-12-02 12:28:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 12:28:26,112 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:26,112 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:26,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:28:26,113 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:26,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1592160981, now seen corresponding path program 1 times [2024-12-02 12:28:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284160449] [2024-12-02 12:28:26,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-12-02 12:28:26,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:26,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284160449] [2024-12-02 12:28:26,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284160449] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:26,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:26,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:28:26,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144509975] [2024-12-02 12:28:26,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:26,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:26,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:26,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:26,247 INFO L87 Difference]: Start difference. First operand 18478 states and 22631 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:30,066 INFO L93 Difference]: Finished difference Result 42487 states and 53153 transitions. [2024-12-02 12:28:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:30,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2024-12-02 12:28:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:30,100 INFO L225 Difference]: With dead ends: 42487 [2024-12-02 12:28:30,101 INFO L226 Difference]: Without dead ends: 24798 [2024-12-02 12:28:30,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:30,111 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 996 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:30,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 795 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 12:28:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24798 states. [2024-12-02 12:28:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24798 to 24786. [2024-12-02 12:28:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24786 states, 24785 states have (on average 1.230260238047206) internal successors, (30492), 24785 states have internal predecessors, (30492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:30,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24786 states to 24786 states and 30492 transitions. [2024-12-02 12:28:30,339 INFO L78 Accepts]: Start accepts. Automaton has 24786 states and 30492 transitions. Word has length 239 [2024-12-02 12:28:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:30,340 INFO L471 AbstractCegarLoop]: Abstraction has 24786 states and 30492 transitions. [2024-12-02 12:28:30,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 24786 states and 30492 transitions. [2024-12-02 12:28:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-12-02 12:28:30,345 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:30,345 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:30,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:28:30,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:30,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:30,346 INFO L85 PathProgramCache]: Analyzing trace with hash -28316692, now seen corresponding path program 1 times [2024-12-02 12:28:30,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:30,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414414020] [2024-12-02 12:28:30,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:30,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414414020] [2024-12-02 12:28:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414414020] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:28:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136432509] [2024-12-02 12:28:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:30,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:28:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:30,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:28:30,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:28:30,877 INFO L87 Difference]: Start difference. First operand 24786 states and 30492 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:35,627 INFO L93 Difference]: Finished difference Result 73224 states and 90680 transitions. [2024-12-02 12:28:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:28:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2024-12-02 12:28:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:35,689 INFO L225 Difference]: With dead ends: 73224 [2024-12-02 12:28:35,689 INFO L226 Difference]: Without dead ends: 49227 [2024-12-02 12:28:35,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:28:35,709 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 2244 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:35,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 757 Invalid, 4813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 12:28:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49227 states. [2024-12-02 12:28:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49227 to 49213. [2024-12-02 12:28:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49213 states, 49212 states have (on average 1.2029992684711046) internal successors, (59202), 49212 states have internal predecessors, (59202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49213 states to 49213 states and 59202 transitions. [2024-12-02 12:28:36,297 INFO L78 Accepts]: Start accepts. Automaton has 49213 states and 59202 transitions. Word has length 316 [2024-12-02 12:28:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:36,298 INFO L471 AbstractCegarLoop]: Abstraction has 49213 states and 59202 transitions. [2024-12-02 12:28:36,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 49213 states and 59202 transitions. [2024-12-02 12:28:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-12-02 12:28:36,307 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:36,307 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:36,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:28:36,308 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:36,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:36,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1413029796, now seen corresponding path program 1 times [2024-12-02 12:28:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:36,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853503218] [2024-12-02 12:28:36,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 12:28:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853503218] [2024-12-02 12:28:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853503218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:36,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:36,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:28:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054743281] [2024-12-02 12:28:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:36,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:28:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:36,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:28:36,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:28:36,680 INFO L87 Difference]: Start difference. First operand 49213 states and 59202 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:43,968 INFO L93 Difference]: Finished difference Result 138781 states and 168388 transitions. [2024-12-02 12:28:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:28:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2024-12-02 12:28:43,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:44,036 INFO L225 Difference]: With dead ends: 138781 [2024-12-02 12:28:44,036 INFO L226 Difference]: Without dead ends: 90357 [2024-12-02 12:28:44,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:28:44,061 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 1708 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 7204 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 8184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 7204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:44,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1140 Invalid, 8184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 7204 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-12-02 12:28:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90357 states. [2024-12-02 12:28:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90357 to 90227. [2024-12-02 12:28:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90227 states, 90226 states have (on average 1.1906656617826348) internal successors, (107429), 90226 states have internal predecessors, (107429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90227 states to 90227 states and 107429 transitions. [2024-12-02 12:28:44,954 INFO L78 Accepts]: Start accepts. Automaton has 90227 states and 107429 transitions. Word has length 342 [2024-12-02 12:28:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:44,955 INFO L471 AbstractCegarLoop]: Abstraction has 90227 states and 107429 transitions. [2024-12-02 12:28:44,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 90227 states and 107429 transitions. [2024-12-02 12:28:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-12-02 12:28:44,959 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:44,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:44,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:28:44,960 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:44,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1271299818, now seen corresponding path program 1 times [2024-12-02 12:28:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069318008] [2024-12-02 12:28:44,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 117 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:28:45,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:45,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069318008] [2024-12-02 12:28:45,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069318008] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:28:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477366897] [2024-12-02 12:28:45,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:28:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:28:45,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:28:45,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:28:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:46,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:28:46,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:28:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-12-02 12:28:46,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:28:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477366897] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:46,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:28:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 12:28:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43160909] [2024-12-02 12:28:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:46,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:46,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:46,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:28:46,989 INFO L87 Difference]: Start difference. First operand 90227 states and 107429 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:50,087 INFO L93 Difference]: Finished difference Result 167867 states and 201404 transitions. [2024-12-02 12:28:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2024-12-02 12:28:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:50,159 INFO L225 Difference]: With dead ends: 167867 [2024-12-02 12:28:50,159 INFO L226 Difference]: Without dead ends: 93390 [2024-12-02 12:28:50,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:28:50,182 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 643 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:50,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1225 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 12:28:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93390 states. [2024-12-02 12:28:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93390 to 91801. [2024-12-02 12:28:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 1.1878322440087146) internal successors, (109043), 91800 states have internal predecessors, (109043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 109043 transitions. [2024-12-02 12:28:50,919 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 109043 transitions. Word has length 345 [2024-12-02 12:28:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:50,920 INFO L471 AbstractCegarLoop]: Abstraction has 91801 states and 109043 transitions. [2024-12-02 12:28:50,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:50,920 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 109043 transitions. [2024-12-02 12:28:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-12-02 12:28:50,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:50,924 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:50,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:28:51,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:28:51,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:51,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -850235256, now seen corresponding path program 1 times [2024-12-02 12:28:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068853305] [2024-12-02 12:28:51,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-12-02 12:28:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:51,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068853305] [2024-12-02 12:28:51,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068853305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:51,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:28:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594133707] [2024-12-02 12:28:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:51,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:51,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:51,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:51,844 INFO L87 Difference]: Start difference. First operand 91801 states and 109043 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:28:55,564 INFO L93 Difference]: Finished difference Result 182817 states and 217304 transitions. [2024-12-02 12:28:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:28:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-12-02 12:28:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:28:55,657 INFO L225 Difference]: With dead ends: 182817 [2024-12-02 12:28:55,657 INFO L226 Difference]: Without dead ends: 91805 [2024-12-02 12:28:55,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:55,703 INFO L435 NwaCegarLoop]: 1425 mSDtfsCounter, 954 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:28:55,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1520 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 12:28:55,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91805 states. [2024-12-02 12:28:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91805 to 91793. [2024-12-02 12:28:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1372995468014642) internal successors, (104395), 91792 states have internal predecessors, (104395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104395 transitions. [2024-12-02 12:28:56,575 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104395 transitions. Word has length 403 [2024-12-02 12:28:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:28:56,575 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104395 transitions. [2024-12-02 12:28:56,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:28:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104395 transitions. [2024-12-02 12:28:56,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-12-02 12:28:56,579 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:28:56,579 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:28:56,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:28:56,580 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:28:56,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:28:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash -137763772, now seen corresponding path program 1 times [2024-12-02 12:28:56,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:28:56,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839113710] [2024-12-02 12:28:56,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:28:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:28:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:28:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-12-02 12:28:57,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:28:57,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839113710] [2024-12-02 12:28:57,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839113710] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:28:57,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:28:57,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:28:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157647936] [2024-12-02 12:28:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:28:57,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:28:57,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:28:57,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:28:57,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:28:57,107 INFO L87 Difference]: Start difference. First operand 91793 states and 104395 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:00,399 INFO L93 Difference]: Finished difference Result 167847 states and 192284 transitions. [2024-12-02 12:29:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:00,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 427 [2024-12-02 12:29:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:00,472 INFO L225 Difference]: With dead ends: 167847 [2024-12-02 12:29:00,473 INFO L226 Difference]: Without dead ends: 91804 [2024-12-02 12:29:00,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:00,636 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 725 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:00,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1234 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 12:29:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91804 states. [2024-12-02 12:29:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91804 to 91793. [2024-12-02 12:29:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1367548370228342) internal successors, (104345), 91792 states have internal predecessors, (104345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:01,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104345 transitions. [2024-12-02 12:29:01,268 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104345 transitions. Word has length 427 [2024-12-02 12:29:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:01,269 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104345 transitions. [2024-12-02 12:29:01,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104345 transitions. [2024-12-02 12:29:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-12-02 12:29:01,273 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:01,273 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:01,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:29:01,273 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:01,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 44906732, now seen corresponding path program 1 times [2024-12-02 12:29:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109373445] [2024-12-02 12:29:01,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 12:29:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109373445] [2024-12-02 12:29:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109373445] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:01,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899733060] [2024-12-02 12:29:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:01,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:01,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:01,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:01,517 INFO L87 Difference]: Start difference. First operand 91793 states and 104345 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:05,400 INFO L93 Difference]: Finished difference Result 246518 states and 281711 transitions. [2024-12-02 12:29:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2024-12-02 12:29:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:05,528 INFO L225 Difference]: With dead ends: 246518 [2024-12-02 12:29:05,528 INFO L226 Difference]: Without dead ends: 152363 [2024-12-02 12:29:05,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:05,565 INFO L435 NwaCegarLoop]: 1761 mSDtfsCounter, 888 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:05,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1897 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:29:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152363 states. [2024-12-02 12:29:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152363 to 142120. [2024-12-02 12:29:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142120 states, 142119 states have (on average 1.108148804874788) internal successors, (157489), 142119 states have internal predecessors, (157489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142120 states to 142120 states and 157489 transitions. [2024-12-02 12:29:07,051 INFO L78 Accepts]: Start accepts. Automaton has 142120 states and 157489 transitions. Word has length 434 [2024-12-02 12:29:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:07,051 INFO L471 AbstractCegarLoop]: Abstraction has 142120 states and 157489 transitions. [2024-12-02 12:29:07,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 142120 states and 157489 transitions. [2024-12-02 12:29:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-12-02 12:29:07,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:07,058 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:29:07,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:07,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1669071297, now seen corresponding path program 1 times [2024-12-02 12:29:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954924606] [2024-12-02 12:29:07,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 207 proven. 75 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-12-02 12:29:07,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:07,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954924606] [2024-12-02 12:29:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954924606] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:29:07,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378325780] [2024-12-02 12:29:07,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:07,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:29:07,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:29:07,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:29:07,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:29:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:07,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:29:07,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:29:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-12-02 12:29:08,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:29:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378325780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:29:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-12-02 12:29:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794283869] [2024-12-02 12:29:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:08,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:08,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:08,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:29:08,343 INFO L87 Difference]: Start difference. First operand 142120 states and 157489 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:11,926 INFO L93 Difference]: Finished difference Result 283440 states and 314176 transitions. [2024-12-02 12:29:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2024-12-02 12:29:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:12,058 INFO L225 Difference]: With dead ends: 283440 [2024-12-02 12:29:12,058 INFO L226 Difference]: Without dead ends: 142109 [2024-12-02 12:29:12,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:29:12,119 INFO L435 NwaCegarLoop]: 635 mSDtfsCounter, 1005 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:12,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 755 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:29:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142109 states. [2024-12-02 12:29:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142109 to 142106. [2024-12-02 12:29:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142106 states, 142105 states have (on average 1.0810808908905387) internal successors, (153627), 142105 states have internal predecessors, (153627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142106 states to 142106 states and 153627 transitions. [2024-12-02 12:29:13,689 INFO L78 Accepts]: Start accepts. Automaton has 142106 states and 153627 transitions. Word has length 451 [2024-12-02 12:29:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:13,690 INFO L471 AbstractCegarLoop]: Abstraction has 142106 states and 153627 transitions. [2024-12-02 12:29:13,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:13,690 INFO L276 IsEmpty]: Start isEmpty. Operand 142106 states and 153627 transitions. [2024-12-02 12:29:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-12-02 12:29:13,695 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:13,695 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:13,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:29:13,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:29:13,896 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:13,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1601864273, now seen corresponding path program 1 times [2024-12-02 12:29:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205506312] [2024-12-02 12:29:13,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:13,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-12-02 12:29:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205506312] [2024-12-02 12:29:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205506312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:14,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731159002] [2024-12-02 12:29:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:14,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:14,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:14,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:14,575 INFO L87 Difference]: Start difference. First operand 142106 states and 153627 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:18,129 INFO L93 Difference]: Finished difference Result 283421 states and 306461 transitions. [2024-12-02 12:29:18,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:18,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2024-12-02 12:29:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:18,249 INFO L225 Difference]: With dead ends: 283421 [2024-12-02 12:29:18,249 INFO L226 Difference]: Without dead ends: 142104 [2024-12-02 12:29:18,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:18,297 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 1108 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:18,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1392 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:29:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142104 states. [2024-12-02 12:29:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142104 to 142103. [2024-12-02 12:29:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142103 states, 142102 states have (on average 1.0619414223585875) internal successors, (150904), 142102 states have internal predecessors, (150904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142103 states to 142103 states and 150904 transitions. [2024-12-02 12:29:19,673 INFO L78 Accepts]: Start accepts. Automaton has 142103 states and 150904 transitions. Word has length 456 [2024-12-02 12:29:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:19,674 INFO L471 AbstractCegarLoop]: Abstraction has 142103 states and 150904 transitions. [2024-12-02 12:29:19,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 142103 states and 150904 transitions. [2024-12-02 12:29:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-12-02 12:29:19,681 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:19,682 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:19,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:29:19,682 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:19,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash -312690779, now seen corresponding path program 1 times [2024-12-02 12:29:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084853824] [2024-12-02 12:29:19,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 558 proven. 100 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-12-02 12:29:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084853824] [2024-12-02 12:29:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084853824] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:29:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750763206] [2024-12-02 12:29:20,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:29:20,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:29:20,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:29:20,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:29:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:21,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:29:21,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:29:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-12-02 12:29:21,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:29:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750763206] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:21,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:29:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:29:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553557010] [2024-12-02 12:29:21,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:21,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:29:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:21,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:29:21,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:29:21,649 INFO L87 Difference]: Start difference. First operand 142103 states and 150904 transitions. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:26,199 INFO L93 Difference]: Finished difference Result 275542 states and 293229 transitions. [2024-12-02 12:29:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:29:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2024-12-02 12:29:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:26,322 INFO L225 Difference]: With dead ends: 275542 [2024-12-02 12:29:26,322 INFO L226 Difference]: Without dead ends: 149187 [2024-12-02 12:29:26,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:29:26,357 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 1908 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 4484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:26,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 801 Invalid, 4484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 12:29:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149187 states. [2024-12-02 12:29:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149187 to 146825. [2024-12-02 12:29:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146825 states, 146824 states have (on average 1.06099820192884) internal successors, (155780), 146824 states have internal predecessors, (155780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146825 states to 146825 states and 155780 transitions. [2024-12-02 12:29:27,840 INFO L78 Accepts]: Start accepts. Automaton has 146825 states and 155780 transitions. Word has length 545 [2024-12-02 12:29:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:27,840 INFO L471 AbstractCegarLoop]: Abstraction has 146825 states and 155780 transitions. [2024-12-02 12:29:27,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 146825 states and 155780 transitions. [2024-12-02 12:29:27,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-12-02 12:29:27,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:27,849 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:27,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:29:28,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:29:28,049 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:28,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash -705129669, now seen corresponding path program 1 times [2024-12-02 12:29:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:28,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557537672] [2024-12-02 12:29:28,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:28,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-12-02 12:29:28,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:28,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557537672] [2024-12-02 12:29:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557537672] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:28,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:28,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776644953] [2024-12-02 12:29:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:28,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:28,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:28,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:28,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:28,500 INFO L87 Difference]: Start difference. First operand 146825 states and 155780 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:32,916 INFO L93 Difference]: Finished difference Result 295257 states and 313203 transitions. [2024-12-02 12:29:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 549 [2024-12-02 12:29:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:33,039 INFO L225 Difference]: With dead ends: 295257 [2024-12-02 12:29:33,039 INFO L226 Difference]: Without dead ends: 147642 [2024-12-02 12:29:33,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:33,081 INFO L435 NwaCegarLoop]: 1665 mSDtfsCounter, 718 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:33,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1802 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:29:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147642 states. [2024-12-02 12:29:34,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147642 to 141301. [2024-12-02 12:29:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141301 states, 141300 states have (on average 1.055166312809625) internal successors, (149095), 141300 states have internal predecessors, (149095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141301 states to 141301 states and 149095 transitions. [2024-12-02 12:29:34,472 INFO L78 Accepts]: Start accepts. Automaton has 141301 states and 149095 transitions. Word has length 549 [2024-12-02 12:29:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:34,472 INFO L471 AbstractCegarLoop]: Abstraction has 141301 states and 149095 transitions. [2024-12-02 12:29:34,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 141301 states and 149095 transitions. [2024-12-02 12:29:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2024-12-02 12:29:34,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:34,483 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:34,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:29:34,483 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:34,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1127182790, now seen corresponding path program 1 times [2024-12-02 12:29:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281531359] [2024-12-02 12:29:34,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:34,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-12-02 12:29:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281531359] [2024-12-02 12:29:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281531359] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852474770] [2024-12-02 12:29:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:34,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:34,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:34,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:34,815 INFO L87 Difference]: Start difference. First operand 141301 states and 149095 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:38,665 INFO L93 Difference]: Finished difference Result 313300 states and 331920 transitions. [2024-12-02 12:29:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 578 [2024-12-02 12:29:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:38,848 INFO L225 Difference]: With dead ends: 313300 [2024-12-02 12:29:38,848 INFO L226 Difference]: Without dead ends: 172788 [2024-12-02 12:29:38,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:38,896 INFO L435 NwaCegarLoop]: 1696 mSDtfsCounter, 759 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:38,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1834 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:29:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172788 states. [2024-12-02 12:29:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172788 to 170419. [2024-12-02 12:29:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170419 states, 170418 states have (on average 1.052371228391367) internal successors, (179343), 170418 states have internal predecessors, (179343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170419 states to 170419 states and 179343 transitions. [2024-12-02 12:29:40,863 INFO L78 Accepts]: Start accepts. Automaton has 170419 states and 179343 transitions. Word has length 578 [2024-12-02 12:29:40,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:40,864 INFO L471 AbstractCegarLoop]: Abstraction has 170419 states and 179343 transitions. [2024-12-02 12:29:40,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 170419 states and 179343 transitions. [2024-12-02 12:29:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-12-02 12:29:40,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:40,874 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:40,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:29:40,875 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:40,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1462924076, now seen corresponding path program 1 times [2024-12-02 12:29:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713216687] [2024-12-02 12:29:40,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 836 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-12-02 12:29:41,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713216687] [2024-12-02 12:29:41,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713216687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:41,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:41,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989715724] [2024-12-02 12:29:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:41,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:41,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:41,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:41,170 INFO L87 Difference]: Start difference. First operand 170419 states and 179343 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:44,917 INFO L93 Difference]: Finished difference Result 333722 states and 351996 transitions. [2024-12-02 12:29:44,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:44,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2024-12-02 12:29:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:45,089 INFO L225 Difference]: With dead ends: 333722 [2024-12-02 12:29:45,090 INFO L226 Difference]: Without dead ends: 179837 [2024-12-02 12:29:45,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:45,136 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 1041 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:45,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1476 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 12:29:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179837 states. [2024-12-02 12:29:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179837 to 179836. [2024-12-02 12:29:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179836 states, 179835 states have (on average 1.048794728501126) internal successors, (188610), 179835 states have internal predecessors, (188610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179836 states to 179836 states and 188610 transitions. [2024-12-02 12:29:47,030 INFO L78 Accepts]: Start accepts. Automaton has 179836 states and 188610 transitions. Word has length 581 [2024-12-02 12:29:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:47,031 INFO L471 AbstractCegarLoop]: Abstraction has 179836 states and 188610 transitions. [2024-12-02 12:29:47,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 179836 states and 188610 transitions. [2024-12-02 12:29:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-12-02 12:29:47,050 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:47,050 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:47,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:29:47,050 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:47,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1140145547, now seen corresponding path program 1 times [2024-12-02 12:29:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:47,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349646625] [2024-12-02 12:29:47,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:47,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-12-02 12:29:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349646625] [2024-12-02 12:29:47,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349646625] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:47,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:47,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:29:47,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602351711] [2024-12-02 12:29:47,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:47,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:29:47,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:47,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:29:47,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:47,667 INFO L87 Difference]: Start difference. First operand 179836 states and 188610 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:51,815 INFO L93 Difference]: Finished difference Result 358879 states and 376370 transitions. [2024-12-02 12:29:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:29:51,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 614 [2024-12-02 12:29:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:51,976 INFO L225 Difference]: With dead ends: 358879 [2024-12-02 12:29:51,976 INFO L226 Difference]: Without dead ends: 178258 [2024-12-02 12:29:52,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:29:52,030 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 783 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:52,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1738 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:29:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178258 states. [2024-12-02 12:29:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178258 to 175882. [2024-12-02 12:29:53,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175882 states, 175881 states have (on average 1.0370420909592282) internal successors, (182396), 175881 states have internal predecessors, (182396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175882 states to 175882 states and 182396 transitions. [2024-12-02 12:29:53,647 INFO L78 Accepts]: Start accepts. Automaton has 175882 states and 182396 transitions. Word has length 614 [2024-12-02 12:29:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:29:53,648 INFO L471 AbstractCegarLoop]: Abstraction has 175882 states and 182396 transitions. [2024-12-02 12:29:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 175882 states and 182396 transitions. [2024-12-02 12:29:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-12-02 12:29:53,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:29:53,659 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:53,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:29:53,659 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:29:53,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -183106340, now seen corresponding path program 1 times [2024-12-02 12:29:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:53,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890542717] [2024-12-02 12:29:53,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:29:53,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:29:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 946 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-12-02 12:29:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890542717] [2024-12-02 12:29:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890542717] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:29:54,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:29:54,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:29:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779943481] [2024-12-02 12:29:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:29:54,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:29:54,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:54,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:29:54,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:29:54,316 INFO L87 Difference]: Start difference. First operand 175882 states and 182396 transitions. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:29:59,223 INFO L93 Difference]: Finished difference Result 337591 states and 350428 transitions. [2024-12-02 12:29:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:29:59,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2024-12-02 12:29:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:29:59,367 INFO L225 Difference]: With dead ends: 337591 [2024-12-02 12:29:59,368 INFO L226 Difference]: Without dead ends: 176669 [2024-12-02 12:29:59,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:29:59,422 INFO L435 NwaCegarLoop]: 1415 mSDtfsCounter, 1573 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 5395 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 5600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 5395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:29:59,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 1683 Invalid, 5600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 5395 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 12:29:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176669 states. [2024-12-02 12:30:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176669 to 173520. [2024-12-02 12:30:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173520 states, 173519 states have (on average 1.0365320224298205) internal successors, (179858), 173519 states have internal predecessors, (179858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173520 states to 173520 states and 179858 transitions. [2024-12-02 12:30:01,056 INFO L78 Accepts]: Start accepts. Automaton has 173520 states and 179858 transitions. Word has length 638 [2024-12-02 12:30:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:01,057 INFO L471 AbstractCegarLoop]: Abstraction has 173520 states and 179858 transitions. [2024-12-02 12:30:01,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 173520 states and 179858 transitions. [2024-12-02 12:30:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2024-12-02 12:30:01,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:01,069 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:01,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:30:01,069 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:01,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1426602745, now seen corresponding path program 1 times [2024-12-02 12:30:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90262837] [2024-12-02 12:30:01,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-12-02 12:30:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90262837] [2024-12-02 12:30:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90262837] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:01,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:30:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618067750] [2024-12-02 12:30:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:01,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:30:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:01,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:30:01,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:01,666 INFO L87 Difference]: Start difference. First operand 173520 states and 179858 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:06,239 INFO L93 Difference]: Finished difference Result 395944 states and 410747 transitions. [2024-12-02 12:30:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:30:06,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2024-12-02 12:30:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:06,497 INFO L225 Difference]: With dead ends: 395944 [2024-12-02 12:30:06,497 INFO L226 Difference]: Without dead ends: 228722 [2024-12-02 12:30:06,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:06,572 INFO L435 NwaCegarLoop]: 699 mSDtfsCounter, 814 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:06,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 799 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:30:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228722 states. [2024-12-02 12:30:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228722 to 195567. [2024-12-02 12:30:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195567 states, 195566 states have (on average 1.0354356074164222) internal successors, (202496), 195566 states have internal predecessors, (202496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195567 states to 195567 states and 202496 transitions. [2024-12-02 12:30:08,731 INFO L78 Accepts]: Start accepts. Automaton has 195567 states and 202496 transitions. Word has length 640 [2024-12-02 12:30:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:08,732 INFO L471 AbstractCegarLoop]: Abstraction has 195567 states and 202496 transitions. [2024-12-02 12:30:08,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:08,732 INFO L276 IsEmpty]: Start isEmpty. Operand 195567 states and 202496 transitions. [2024-12-02 12:30:08,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-12-02 12:30:08,749 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:08,750 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:08,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:30:08,750 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:08,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 516327610, now seen corresponding path program 1 times [2024-12-02 12:30:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:08,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142491946] [2024-12-02 12:30:08,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-12-02 12:30:09,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:09,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142491946] [2024-12-02 12:30:09,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142491946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:09,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:09,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:30:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137529775] [2024-12-02 12:30:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:09,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:30:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:09,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:30:09,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:09,331 INFO L87 Difference]: Start difference. First operand 195567 states and 202496 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:13,048 INFO L93 Difference]: Finished difference Result 387216 states and 401335 transitions. [2024-12-02 12:30:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:30:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 678 [2024-12-02 12:30:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:13,257 INFO L225 Difference]: With dead ends: 387216 [2024-12-02 12:30:13,257 INFO L226 Difference]: Without dead ends: 208969 [2024-12-02 12:30:13,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:13,319 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 657 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:13,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 968 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 12:30:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208969 states. [2024-12-02 12:30:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208969 to 202659. [2024-12-02 12:30:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202659 states, 202658 states have (on average 1.0352564418873176) internal successors, (209803), 202658 states have internal predecessors, (209803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202659 states to 202659 states and 209803 transitions. [2024-12-02 12:30:15,514 INFO L78 Accepts]: Start accepts. Automaton has 202659 states and 209803 transitions. Word has length 678 [2024-12-02 12:30:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:15,514 INFO L471 AbstractCegarLoop]: Abstraction has 202659 states and 209803 transitions. [2024-12-02 12:30:15,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 202659 states and 209803 transitions. [2024-12-02 12:30:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-12-02 12:30:15,538 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:15,538 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:15,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:30:15,539 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:15,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1468633857, now seen corresponding path program 1 times [2024-12-02 12:30:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:15,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118355433] [2024-12-02 12:30:15,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:15,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2024-12-02 12:30:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118355433] [2024-12-02 12:30:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118355433] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:15,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:15,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:30:15,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350268126] [2024-12-02 12:30:15,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:15,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:30:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:15,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:30:15,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:15,884 INFO L87 Difference]: Start difference. First operand 202659 states and 209803 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:18,779 INFO L93 Difference]: Finished difference Result 385618 states and 399500 transitions. [2024-12-02 12:30:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:30:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 700 [2024-12-02 12:30:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:18,976 INFO L225 Difference]: With dead ends: 385618 [2024-12-02 12:30:18,977 INFO L226 Difference]: Without dead ends: 200279 [2024-12-02 12:30:19,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:19,052 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 1587 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:19,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 258 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 12:30:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200279 states. [2024-12-02 12:30:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200279 to 200278. [2024-12-02 12:30:20,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200278 states, 200277 states have (on average 1.034617055378301) internal successors, (207210), 200277 states have internal predecessors, (207210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200278 states to 200278 states and 207210 transitions. [2024-12-02 12:30:21,046 INFO L78 Accepts]: Start accepts. Automaton has 200278 states and 207210 transitions. Word has length 700 [2024-12-02 12:30:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:21,046 INFO L471 AbstractCegarLoop]: Abstraction has 200278 states and 207210 transitions. [2024-12-02 12:30:21,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:21,046 INFO L276 IsEmpty]: Start isEmpty. Operand 200278 states and 207210 transitions. [2024-12-02 12:30:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2024-12-02 12:30:21,061 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:21,061 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:21,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:30:21,061 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:21,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2027567573, now seen corresponding path program 1 times [2024-12-02 12:30:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:21,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833248145] [2024-12-02 12:30:21,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 909 proven. 125 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2024-12-02 12:30:22,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833248145] [2024-12-02 12:30:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833248145] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:30:22,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731333420] [2024-12-02 12:30:22,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:22,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:30:22,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:30:22,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:30:22,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:30:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:22,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:30:22,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:30:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 1185 proven. 0 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-12-02 12:30:23,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:30:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731333420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:23,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:30:23,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-02 12:30:23,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010605387] [2024-12-02 12:30:23,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:23,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:30:23,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:23,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:30:23,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:30:23,841 INFO L87 Difference]: Start difference. First operand 200278 states and 207210 transitions. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:28,012 INFO L93 Difference]: Finished difference Result 383239 states and 396893 transitions. [2024-12-02 12:30:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:30:28,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 709 [2024-12-02 12:30:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:28,219 INFO L225 Difference]: With dead ends: 383239 [2024-12-02 12:30:28,219 INFO L226 Difference]: Without dead ends: 200281 [2024-12-02 12:30:28,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:30:28,295 INFO L435 NwaCegarLoop]: 569 mSDtfsCounter, 2400 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 3639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:28,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 704 Invalid, 3639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:30:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200281 states. [2024-12-02 12:30:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200281 to 199491. [2024-12-02 12:30:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199491 states, 199490 states have (on average 1.033720988520728) internal successors, (206217), 199490 states have internal predecessors, (206217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199491 states to 199491 states and 206217 transitions. [2024-12-02 12:30:30,313 INFO L78 Accepts]: Start accepts. Automaton has 199491 states and 206217 transitions. Word has length 709 [2024-12-02 12:30:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:30,314 INFO L471 AbstractCegarLoop]: Abstraction has 199491 states and 206217 transitions. [2024-12-02 12:30:30,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 199491 states and 206217 transitions. [2024-12-02 12:30:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2024-12-02 12:30:30,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:30,328 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:30,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 12:30:30,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 12:30:30,528 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:30,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1573080581, now seen corresponding path program 1 times [2024-12-02 12:30:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:30,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861907453] [2024-12-02 12:30:30,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 467 proven. 253 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-12-02 12:30:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861907453] [2024-12-02 12:30:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861907453] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:30:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511952895] [2024-12-02 12:30:32,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:32,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:30:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:30:32,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:30:32,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:30:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:32,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:30:32,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:30:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 704 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-12-02 12:30:33,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:30:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511952895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:30:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 12:30:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185511122] [2024-12-02 12:30:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:33,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:30:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:33,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:30:33,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:30:33,244 INFO L87 Difference]: Start difference. First operand 199491 states and 206217 transitions. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:39,747 INFO L93 Difference]: Finished difference Result 437683 states and 452572 transitions. [2024-12-02 12:30:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:30:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 713 [2024-12-02 12:30:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:39,967 INFO L225 Difference]: With dead ends: 437683 [2024-12-02 12:30:39,967 INFO L226 Difference]: Without dead ends: 250001 [2024-12-02 12:30:40,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:30:40,045 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 1637 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5825 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 6465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 5825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:40,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 711 Invalid, 6465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 5825 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 12:30:40,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250001 states. [2024-12-02 12:30:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250001 to 240447. [2024-12-02 12:30:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240447 states, 240446 states have (on average 1.033579265198839) internal successors, (248520), 240446 states have internal predecessors, (248520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240447 states to 240447 states and 248520 transitions. [2024-12-02 12:30:42,135 INFO L78 Accepts]: Start accepts. Automaton has 240447 states and 248520 transitions. Word has length 713 [2024-12-02 12:30:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:42,135 INFO L471 AbstractCegarLoop]: Abstraction has 240447 states and 248520 transitions. [2024-12-02 12:30:42,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 240447 states and 248520 transitions. [2024-12-02 12:30:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2024-12-02 12:30:42,151 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:42,151 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:42,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:30:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed042dc-9997-421f-8f24-e62e51408cb2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:30:42,351 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:42,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1074374799, now seen corresponding path program 1 times [2024-12-02 12:30:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653879951] [2024-12-02 12:30:42,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-12-02 12:30:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653879951] [2024-12-02 12:30:43,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653879951] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:43,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:43,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:30:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858439337] [2024-12-02 12:30:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:43,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:30:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:43,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:30:43,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:30:43,514 INFO L87 Difference]: Start difference. First operand 240447 states and 248520 transitions. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:50,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:50,105 INFO L93 Difference]: Finished difference Result 521894 states and 539600 transitions. [2024-12-02 12:30:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:30:50,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 878 [2024-12-02 12:30:50,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:50,361 INFO L225 Difference]: With dead ends: 521894 [2024-12-02 12:30:50,361 INFO L226 Difference]: Without dead ends: 284597 [2024-12-02 12:30:50,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:30:50,415 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 1643 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 5792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:50,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 523 Invalid, 5792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 4914 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 12:30:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284597 states. [2024-12-02 12:30:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284597 to 268781. [2024-12-02 12:30:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268781 states, 268780 states have (on average 1.0338232011310364) internal successors, (277871), 268780 states have internal predecessors, (277871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268781 states to 268781 states and 277871 transitions. [2024-12-02 12:30:53,480 INFO L78 Accepts]: Start accepts. Automaton has 268781 states and 277871 transitions. Word has length 878 [2024-12-02 12:30:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:30:53,480 INFO L471 AbstractCegarLoop]: Abstraction has 268781 states and 277871 transitions. [2024-12-02 12:30:53,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 268781 states and 277871 transitions. [2024-12-02 12:30:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2024-12-02 12:30:53,500 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:30:53,500 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:30:53,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:30:53,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:30:53,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:30:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1667465228, now seen corresponding path program 1 times [2024-12-02 12:30:53,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:30:53,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374341290] [2024-12-02 12:30:53,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:30:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:30:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:30:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 1134 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-12-02 12:30:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:30:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374341290] [2024-12-02 12:30:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374341290] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:30:54,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:30:54,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:30:54,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660133775] [2024-12-02 12:30:54,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:30:54,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:30:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:30:54,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:30:54,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:54,340 INFO L87 Difference]: Start difference. First operand 268781 states and 277871 transitions. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:30:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:30:58,841 INFO L93 Difference]: Finished difference Result 525769 states and 543788 transitions. [2024-12-02 12:30:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:30:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 888 [2024-12-02 12:30:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:30:59,074 INFO L225 Difference]: With dead ends: 525769 [2024-12-02 12:30:59,074 INFO L226 Difference]: Without dead ends: 265646 [2024-12-02 12:30:59,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:30:59,161 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 716 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:30:59,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1681 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:30:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265646 states. [2024-12-02 12:31:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265646 to 259333. [2024-12-02 12:31:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259333 states, 259332 states have (on average 1.0315849952956055) internal successors, (267523), 259332 states have internal predecessors, (267523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259333 states to 259333 states and 267523 transitions. [2024-12-02 12:31:02,003 INFO L78 Accepts]: Start accepts. Automaton has 259333 states and 267523 transitions. Word has length 888 [2024-12-02 12:31:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:02,003 INFO L471 AbstractCegarLoop]: Abstraction has 259333 states and 267523 transitions. [2024-12-02 12:31:02,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 259333 states and 267523 transitions. [2024-12-02 12:31:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2024-12-02 12:31:02,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:02,040 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:31:02,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:31:02,040 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:02,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1989064553, now seen corresponding path program 1 times [2024-12-02 12:31:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692151468] [2024-12-02 12:31:02,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:02,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:31:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 785 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2024-12-02 12:31:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692151468] [2024-12-02 12:31:02,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692151468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:31:02,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:31:02,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:31:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134647693] [2024-12-02 12:31:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:31:02,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:31:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:02,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:31:02,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:31:02,996 INFO L87 Difference]: Start difference. First operand 259333 states and 267523 transitions. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:31:06,675 INFO L93 Difference]: Finished difference Result 515516 states and 531967 transitions. [2024-12-02 12:31:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:31:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 976 [2024-12-02 12:31:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:31:06,911 INFO L225 Difference]: With dead ends: 515516 [2024-12-02 12:31:06,911 INFO L226 Difference]: Without dead ends: 265633 [2024-12-02 12:31:06,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:31:06,989 INFO L435 NwaCegarLoop]: 1658 mSDtfsCounter, 630 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:31:06,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1777 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 12:31:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265633 states. [2024-12-02 12:31:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265633 to 264055. [2024-12-02 12:31:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264055 states, 264054 states have (on average 1.030611162868201) internal successors, (272137), 264054 states have internal predecessors, (272137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264055 states to 264055 states and 272137 transitions. [2024-12-02 12:31:09,542 INFO L78 Accepts]: Start accepts. Automaton has 264055 states and 272137 transitions. Word has length 976 [2024-12-02 12:31:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:31:09,543 INFO L471 AbstractCegarLoop]: Abstraction has 264055 states and 272137 transitions. [2024-12-02 12:31:09,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 264055 states and 272137 transitions. [2024-12-02 12:31:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2024-12-02 12:31:09,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:31:09,567 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:31:09,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:31:09,567 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:31:09,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1794305357, now seen corresponding path program 1 times [2024-12-02 12:31:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:09,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452686838] [2024-12-02 12:31:09,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:31:09,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms